1317095137 has 4 divisors (see below), whose sum is σ = 1325484436. Its totient is φ = 1308705840.

The previous prime is 1317095113. The next prime is 1317095237. The reversal of 1317095137 is 7315907131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 354606561 + 962488576 = 18831^2 + 31024^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317095137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317095096 and 1317095105.

It is not an unprimeable number, because it can be changed into a prime (1317095237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4194414 + ... + 4194727.

It is an arithmetic number, because the mean of its divisors is an integer number (331371109).

Almost surely, 2^1317095137 is an apocalyptic number.

It is an amenable number.

1317095137 is a deficient number, since it is larger than the sum of its proper divisors (8389299).

1317095137 is an equidigital number, since it uses as much as digits as its factorization.

1317095137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8389298.

The product of its (nonzero) digits is 19845, while the sum is 37.

The square root of 1317095137 is about 36291.8053698077. The cubic root of 1317095137 is about 1096.1560421374.

The spelling of 1317095137 in words is "one billion, three hundred seventeen million, ninety-five thousand, one hundred thirty-seven".